#    Supsta
#    Copyright (c) 2014 Sebastian Dufner
#
#    This file is part of Supsta.
#
#    Supsta is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    Supsta is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.

require 'supsta/gimp/drawable'

module Supsta
  module Gimp
    class Layer < Drawable

      def scale(width, height, interpolate = :cubic)
        method = case interpolate
          when :none    then 0
          when :linear  then 1
          when :cubic   then 2
          when :lanczos then 3
          else 3
        end

        script = "(gimp-layer-scale-full #{@self} #{width} #{height} 1 "
        script.concat "#{method})\n"

        @app.script.concat script

        self
      end

      def set_offsets(x, y)
        @app.script.concat "(gimp-layer-set-offsets #{@self} #{x} #{y})\n"

        self
      end

      def anchor!
        @app.script.concat "(gimp-floating-sel-anchor #{@self})\n"

        nil
      end

    end
  end
end
